Metal car-roof.



W. P. MURPHYB. METAL CAR ROOF.

APPLlcArmN mso mAv 6, 1914. "31.9113963@ Patented My111915.

3 SHEETS-SHEET I.

.3f @ya v v n ff W11 W. P. MURPHY.

- METAL cARfRooE.

- APPLlcATloN FILED MAYG, 1914.

Fatented May 11, 19%

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W. P. MURPHY.

METAL CAR ROOF.

APPLICATION FILED MAY 6, 1914.

1.1399363. Patented May 11, 1915.`

' 3 SHEETssHET a.

' y I ,/f/ Wy@ UMTFD @TATE WALTER P. IURPHY,. OF CHICAGO, ILLINOIS.

METAL can-noon.

Specification of Letters Patent.

rammen May 11,1915.

Application led May 6, 1914. Serial N o. 836,598.

To alii whom it may con cern:A

Be itknown that I, WALTER P. MURPHY,

a citizen of the United States, and a resi sists in a new type of roofmade of plates of heavy gage sheet metal which is free from the defectsof heavy gage metal roofs of the types heretofore used.

Roofs made of heavy plates riveted together and tothe car frame lworkloose in service and leak. The so-called flexible metal car roofs, inwhich the roof sheets are loosely held upon the roof substructure andare free to move somewhat with respect to each other, are notwater-tight and the roof sheets work out of place in service.

The metal car roof which is the principal object of this invention iscomposed of root' sheets which are rigidly attached to thereofsubstructure at the ridge, and which are freely movable with respect ttothe rootl substructure at the eaves. The roof sheets are arrangedcrosswise of the car extending from eaves to eaves, and are lapped andsecured together along their adjacent edges, forming a completewater-tight covering for the car irrespective of 'the roof substructureand of the means for attaching the roof sheets..

thereto. i Other objects, and 'advantages of the invention appear inconnection with the fol lowing description of the embodiment there of'illustrated in the accompanying drawings;

In the drawings, wherein like parts are designated by the same referencecharacters in the several views, Figure 1 is a plan view of an endportion of a car root/embodying the invention, top parts of the roofbeing broken away to disclose the parts beneath; Fig. 2 is a half endelevation of the roof and a half transverse section of the same on theline Q-Q in Fig. 1; Fig. 3 is a side elevation of the portion of theroof shown in Fig. 1;

Fig. 4 is a side elevation to a larger scale' of a portion of the car atthe eaves, showing an eaves cap F1 g. 5 1s a cross-sectlon through aportion of the car at the eaves on the line .,5-5 in Fig. 1; Fig. 6 is across-section through a portion of the car at theridge crosswise of acarline, on the line 6-6 of F 1g. 1; Fig. 7 is a similar cross-sectionat the 'eaves of the car on the line 7-7 in Fig. 1;

. Fig. 8 is a cross-section of a portion of the car at the eaveslengthwise of the carline, on

the line 8 8 in Fig. 1, the carline, bolts and retaining clip beingshown in elevation; Fig. 9 is a longitudinal section of portions of theroof at the end of the car on the line 9-9'in Fig. l; Fig. 10 is a sideview of the inside of an eaves cap; Fig. 11 is a perspective View of aridge bolt retaining block; and Fig. 12 is a cross-section through theleaves of' a car having a metal frame, showitng almodiiied form of eavescap in elevaion.

In the-drawings, the invention is shown applied to a car having woodside plates 11 and end plates l2, but it is also adapted to a 'carhaving metal side and end plates.

The roof substructure consists of inverted T-shaped cai-lines 13 whichare bolted to the -i side plates, and metal purlins 14 of` channel shapewith their ends supported onand securely riveted to thebottom-flanges ofthe carlines. The ends of the carlines are located in notches in thetops of the side plates, and their extremities are bent down outside vofthe sid'e plates.

esy

gage sheet metal, are arranged crosswise of the car with their endsresting onthe side plates and their middle portiori supported en thepurlins. The roof sheetsare formed with stiifening corrugations 16 whicheX- tend from end to end of the sheets at spaced intervals andstrengthen them against buckling under any weight likely to come uponthem. The roof sheets are somewhat wider than the spaces between thecarlines, and their side margins are formed with doubledup flanges 17 ofapproximately inverted V- shape having round tops and slantingsidewalls. These flanges 17 extend from end to end of the roc f sheets, andstraddle over the vertical webs of the carlines, the proximate flangesof adjacent roof sheets lapping and'A embracing each other' to "dormstanding seams or lap joints between the roof sheets.

The ends of the roof .sheetsabetween the side flanges 17 are providedwith straight downturned flanges 18 which overhang the side plates ofthe car. The end flanges 18 are spaced away from the side plates nearbeneath the ends'of the roof sheets; and support the latter where theside -plates are notched to receive the ends of the carlines.

At each end of the car an anglel shield strip 21 is secured to the endplate. The horizontal flange -of the langle shield lays over theend-margin of the end roof sheet, and its inner edge 22 is bent down torest flat on the roof sheet within the outer cor-4 rugation 16 of thelatter.

Seam cover strips 23 of inverted 'gutter shape `are arranged over thestanding seams 17 of the roof sheets, with their margins 24 resting onthe roof sheets between the seam flanges 17 and vcorrugations 16. Theseam covers are spaced from the tops and side wallsoil the seam flanges.

The rooisheets are rigidly bolted to th carlines by bolts 25 at theridge of the car...

The heads of the ridgeboltsy25 are slipped into dove-tail. or invertedT-shaped slots in j the top ilanges of the vertical' webs of thecarlines, and are'secured therein by perforated saddle blocks 26 whichare slipped onto the shanks of the bolts 'and seated` astride of the topwebs of the 'carlines The tops of the ridge bolt retaining blocks are'rounded to conform to the under side of the standing seam flanges of theroof sheets, and the roof sheets'rest directl Holes are made in thetops'o" fthe seam 4flanges at the ridge through which the bolts y25pass.

Saddle shaped washers 27 are'se'ated on the seam flanges at the ridgeline, and have their tops shaped to conform to the under side of theseam covers 23. The seam cov.

ers have flanged holes at the ridge for the bolts 25.

of the seam covers and firmly secure the latter and the roof sheets tothe carlines at the ridge. Leather or soft metalwash'ers 29 may bcplaced between the nuts 28 and seam vcovers 23, into which the flangessurrounding the bolt holes in the latter may sink, thereby making tightjoints around the ridge bolts to keep. out water. l

f Running board saddles 30 rest upon the seam covers, and are providedwith holes at the ridge for the bolts which' secure the roof sheets andseam covers to the carlines. rlfhe upper ends of the bolts 25 pro jectthrough the running boald saddles, andj nuts 31 secure the lattes toAthe roof. Thel ning board saddles.

yends of the 'seams on' the leeward side.

on them:

holes through the running board saddles are counter-bored at their upperand lower ends to forin recesses for the nuts 28 and 31. Cover plates 32are arranged across the running board saddles over the upper recesses.-Running boards 33 are nailed'to the run- The end running board saddlesrest loosely on the angle shield strips at the ends of the car, and theends of the running boards project beyond the ends 1 5 of the oarand aresecured together 'and supported by brackets 34.

The seam covers are securedto the car at the eaves by eaves caps 35which fit-.over the ends of the seam covers and are bolted to the sideplates and to the end of the carlines. The eaves caps are somewhat widerthan the seam covert,` and their side and' front walls cover` the openends of the stand-v ing seams and the'spaces between the downturned end'lflanges ofthe roof sheets. On vtheir und'er sides the eaves caps haveledges 36 and webs 37 which rest in the 'angle ofthe flashing stripsover the side sheathing of the car and thereby position the eaves capsaway from the ends ofthe standing seams. Sufficient space is leftbetween the eaves caps and flashing strips forair to circulate into andout ofthe car through the ends of the standing' seams and between themand the flashing strips. The webs\37 act as varies or air deilee'tors,4and causeetheaair current between-the eaves caps' and flashing due tothe motion of the carto blow into the'ends of the standing seams on theWindward side, and also protect the egress offair from rIthe 1e spacebetween the eaves caps and flashing strips also permits the end yflangesof the roof sheets to'move freely with respect to the eaves of the car.Bolts 38 through the lower eaves flashing strips to the side of ,thecar. Bolts 39 with their heads secured in dovetail or T-shaped slots inthe ends of the Webs of the carlines project outwardly through the eavescap'sand secure the latter to the ends of the carlines. The' bolts 39are held i in place in the carline slots by means of Nuts 28 are screweddown hard on the tops V-s aped clips 40 arranged` astride 'of the carliLe webs and having holes in their twol brancheswhich embrace the'heads ofthe bolts. 't

nMFig. 12 a modified form of eaves cap 41 is shbwn which is adapted forcars having m'etah angle or Z-bar side plates 42. The fro tlwall of theeaves cap 41 is spaced fronlthe eaves flashing strips l13 to permit circlation of air into and out of' thecar. Themaves caps prevent water fromblowing causing air to circulate into and out of the car and therebykeep the under sides of the roof sheets dry.

' 'ends of the eaves caps secure them and the vdirectly into the openends of the standing seams, and 'at the same time they assist in incassaan From the preceding description it is evident that the root' sheetsare mutually dependent, that is, they coopera-te to retain each other inposition; and collectively they form a substantially complete andself-contained water-tight covering extending from side to side of thecar over its full length. The roof sheets are unsecured to the car eX-cept along the ridge line; hence lateral vibration and relativelengthwise movement of the sides and ends of the car are not directlytransmitted to the roof, and relative movement of one roof sheet withrespect to another is not occasioned thereby. The shape of the lappedmargins of the roof sheets permits one root sheet to slip over or underits neighbor lengthwise of the car at the eaves to the limited extentpermitted by the eaves fastenings and the seam covers at all times holdthe lapped margins of the roof sheets in contact with each other fortheir entire length; hence the roon can accommodate itself to sagging orbowing of the side plates, or twisting of the sides or ends fof the carout of square Without the roof sheets becoming spread. Also no movementof the roofplates with respect to each other or with respectI to .theroof substructure is possible at the ridge, and hence each rrootvl plateis firmly secured in transverse alinement with the center line of thecar roof irrespective of the vibration and distortion of the roofsubstructure.

lt is evident that modification may be iliade in the forms andarrangement of the parts shown in the drawings without departing fromthe invention, and the invention is notl restricted to the specificforms and arrangement shown and described.

That l claim as my invention is:

1. A car frame having carlines and longitudinal members connecting thesame, load sustaining roofing sheets extending from eaves to eavescovering the entire space therebetween and having their side marginaledges overlapped and looped over the carlines, and tixedly attached tothe car at the ridge and loosely secured at the eaves to permit movementof the sheets as a whole lengthwise of the car at the eavesindependently of the carlines.

2. A car frame comprising side plates, a skeleton roof frame supportedby said car frame, and overlapping roofing-sheets supported by said roofframe and covering the car from eaves to eaves, said sheets being ixedlysecured to the roof frame at the ridge thereof and loosely supported bysaid roof frame away from the ridge, and seam caps secured to thesubstructure in the neighborhood` of the eaves and overlapping thejoints between said overlapping sheets, said caps being adapted topermit a limited movement of the roof sheets relative to saidsubstructure, whereby said car roof Permav nently maintains itsretajtlon to the substructure at the ridge fasteningsbut is movablerelative to the substructure at all other points.

3. A car roo comprising carlines and metal roofing sheets arrangedcrosswise of the car and supported on said carlines, said sheets havinginterlocking margins looped over the cariines and ixedly secured to saidcarlines at the ridge, said sheets being movable relative to thesubstructure at all other points, and eaves caps vover the eaves ends ofsaid looped margins, said caps restraining the movement of said sheetsat the eaves.

4. car roof comprising carlines and metal roofing sheets supportedthereby and interlocled at their margins to constitute a complete roofcovering, said sheets being iiXedly secured together and to the carlinesat the ridge and loosely secured to the eaves ends of the cai-lines,whereby said sheets are movable as a unitary structure along with themiddles of said carlines and independently of their ends.

5. A car roof including cai-lines, and load sustaining roofing sheetsattached to the car at the ridge and secured at the eaves in such a wayas to permit movement of the sheets as a whole lengthwise of the car atthe eaves.'

the side marginal edges of sa'id sheets overlapping each other andlooped over the carlines by which they are supported.

(5. A car roof comprising a series of load sustaining rooting sheetswhich are loosely overlapped and are rigidly secured together at theridge-to form a continuous covering for the entire car, said coveringbeing movable as a unit relatively to the car at points remote from theridge, and said root sheets having a limited amount of movement at theeavesindependently of each other.

7. A car roof including a series of rigid load sustaining roofing sheetshaving over-A lapping inverted V shape side 5 marginal edges extendingfrom side to side of the car and secured together at their middlepoints, said root spanning spaces between the sides of the car and beingmovable as a iieXible unit relative to the car sides.

8. ln a car roof a supporting frame momber, load sustaining roofingsheets extending from eaves to eaves, a running board saddle, nut seatsformed in the upper and lower faces of said saddle and a bolt openingextending from one seat to the other, a bolt passing through saidsupporting t' 'aine member and through said bolt opening in the saddleand through the roofing sheets, a nut on said bolt in the seat in theunder side of the saddle locking the root sheet to the supporting framemember' and a nut in the seat in the upper face of the saddle loclringTthe saddle to said bolt and on the roofing sheets and a cap on thesaddle covering th said bolt and nut seats against the elements.

Ny) y 9. A car roof comprising a skeleton frame, load sustainingmetallic roofing sheets spanning the open spaces of said frame, the sidemarginal edge portions of' adjacent sheets having upstandinginterlocking members rigidly secured'together at the ridge andconstituting a joint between the adjacent sheets flexible transverselythereof at all other points.

10, In a car,l a skeleton roof substructure, roof sheets constituting acomplete Watertight. covering supported on said substructure, said roofsheets extending from eaves to eaves and overlapping along their sidemargins,` means for rigidly securing said roof sheets to the roofsubstructure at the ridge, and means for retainingv the side margins ofthe roof sheets in contact With each other while permitting slightrelative movement of the `-roof sheets with respect to each otherattheeaves independently of the distortion of the substructure.

11. In avcar, a `skeleton roof substructure, roof sheets constituting acomplete waterti'ght covering supportedpn said substructure, said 'roofsheets extending from leaves 'to eaves and overlapping .along their sidemargins, means .for rigidly securing said roof sheets to the'roofsubstructure at the ridge, and cover strips for retaining the side"margins of the roofsheets in contact 'f with each other While permittingslight relative movement of the roof sheets with respect to each otherat the eaves .independently of the distortion of the substructure, saidcover strips being secured to the substructure at the eaves.

` l2. In a car roof, roof sheets having Aside capre of this pan-:entV:fate obtained for ve cents each, by addressing lWashington, D. C.

.of April 191,4.

flanges of\in verted V-shape, the proximate flanges of adjacent sheetsbeingsuperposed to form standing'seams with slanting Walls, and coverstrips of inverted gutter shape straddling said standing seams andspaced therefrom, the lateral margins of said cover strips resting on'said roof sheets andretaining them in contact. 13. A metal car roofcomprising roof plates supported on a skeleton frame and extending fromeaves to eaves, means for joining said roof plates together along theirsid'e margins, vand means at the ridge for retaining said roof plates incentral alinement, said roof plates having a limited amount 'of play oneach side of the ridge relatively to said frame.

14. A metal car rooiffcomprising roofl plates secured together alongtheir side marginsand supported on a skeleton frame,

means for securing said roof to said frame at the ridge, said roof being-free on each side of said-ridge to move relativelyto said frame.

15. A car roof construction comprising carlines having upstanding webs,roof plates I said roof plates being spaced out of contact g with saidcarlines, means for securing said roof plates to said carlines at theridge, and means -for'loosely securing the eaves ends of said roofplates. v

Signed at Chicago, Illinois, this 30th day WALTER P. MURPHY. Witnesses:

P.. F. MCSHANE,

J osErHIN HAR'rNE'rn the (ommissionex of Patenti.'

having their side margins secured together, f

